An altimeter in a small airplane.
altimeter definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
an instrument for measuring height above a given reference level, as the sea or ground: in aircraft it is either an aneroid barometer with a dial marked in feet or meters or an instrument using radar
Origin: alti- plush -meter
altimeter definition by American Heritage Dictionary
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
An instrument for determining elevation, especially an aneroid barometer used in aircraft that senses pressure changes accompanying changes in altitude.
Origin: Latin altus, high; see al-2 in Indo-European roots + -meter.
- alˌti·metˈric adjective
- al·timˈe·try noun
altimeter - Science Definition
An instrument that measures and indicates the height above sea level at which an object, such as an airplane, is located.